micro-utils/scripts/musuid.c

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <libgen.h>
#define _MUSUID_C
#include "config.h"

const char *progs[] = {"su", "ping"};

int main(int argc, char **argv) {
	char *prog = basename(argv[0]);

	if (argc == 1 && !strcmp(prog, "musuid")) {
		fputs("musuid: missing operand\n", stderr);
		return 1;
	}

	else if (!strcmp(prog, "musuid")) {
		argv++;
		argc--;

		prog = argv[0];
	}

	/* RUN */
	for (size_t i = 0; i < sizeof(progs) / sizeof(char *); i++)
		if (!strcmp(prog, progs[i]))
			execv(MUTILS_PATH, argv);

	fprintf(stderr, "musuid: unknown command: %s\n", argv[0]);
	return 1;
}